A great-grandmother named Tanzilya Bisembeyeva, who lives with her family in the village of Alcha in Krasny Yar district, Astrakhan, southern Russia and has celebrated her 120th birthday, claims she is the world's oldest living person.

Bisembeyeva who survived the Russian Revolution, World War I, World War II and two husbands, is said to have been born in 1896. If her claims are true, she beats the current Guinness World Record holder, Italian Emma Morano, by more than three years. She lived her whole life in the region she was born, worked in the fields for 60 years and currently depends on a small pension...